Communications: directive radio wave systems and devices (e.g. – Determining direction – With frequency or phase steering
Reexamination Certificate
2008-01-01
2008-01-01
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining direction
With frequency or phase steering
C342S158000, C342S108000, C342S372000
Reexamination Certificate
active
11176549
ABSTRACT:
A concept is described for broadening the beam of a phased array radar antenna to provide continuous illumination of all radar targets within the search space, and this beam is compressed upon reception to realize the angular resolution that is possible with the antenna. The process is analogous to pulse compression. The advantages of the long dwell times provided by this concept include superior clutter suppression performance, more accurate tracking of targets, and the ability to analyze the target returns for reliable discrimination, classification and identification. The broad beam also reduces the power seen by an intercept receiver, for increased covert operation. This is all accomplished without any sacrifice in power. Various embodiments are disclosed.
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R. P. Perry et al., “SAR Imaging of Moving Targets”, IEEE Transactions on Aerospace and Electronic Systems, Jan. 1999, pp. 188-199, vol. 35, No. 1.
Mitchell Richard L.
Rihaczek August W.
Blakely , Sokoloff, Taylor & Zafman LLP
Chen Shelley
MARK Resources, Inc.
Tarcza Thomas H.
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